Anyone interested in learning about human perseverance would do well to spend a couple hours reading Viktor Frankl's Man's Search for Meaning.

It's short. It's accessible. There is also a noticeable absence of Richard Gere.

“In psychiatry there is a certain condition known as delusion of reprieve. The condemned man, immediately before his execution, gets the illusion that he might be reprieved at the very last minute. No one could yet grasp the fact that everything would be taken away. all we possessed, literally, was our naked existence.”

The trick is that our naked existence is all we ever have. Learning to deal with this fact, to accept and and even rely on this fundamental truth, is the first step towards developing a real purpose in life. This is the kind of thing that will get you out of bed each day.